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{"title":"315 kVA Three-Phase Pad-Mounted Transformer 11kV\/400V ANSI\/IEEE Flip-Top","imgUrl":"https:\/\/img.chinax.com\/nimg\/71\/97\/ff9d8d250b8f2a9038087bd71847-200x200-1\/315_kva_three_phase_pad_mounted_transformer_11kv_2f400v_ansi_2fieee_flip_top.jpg","attrs":{"Payment Terms":"T\/T","Usage":"Outdoor Power Line Operation","Insulation Fluid":"Mineral Oil \/ FR-3 Oil","Customized":"Accept"}}
{"title":"315kVA Pad Mounted Transformer 12.47kV to 480V Three Phase DOE & ANSI Certified","imgUrl":"https:\/\/img.chinax.com\/nimg\/71\/97\/ff9d8d250b8f2a9038087bd71847-200x200-1\/315kva_pad_mounted_transformer_12_47kv_to_480v_three_phase_doe_26_ansi_certified.jpg","attrs":{"Insulationtype":"Mineral Oil or Ester Fluid","Powerrating":"15 kVA to 3000 kVA","Tapping Range":"2X2.5%","Operatingtemperaturerange":"-40\u00b0C to +40\u00b0C"}}
{"title":"75kVA Oil Immersed Three Phase Style Pad Distribution Transformer 35kV ONAN","imgUrl":"https:\/\/img.chinax.com\/nimg\/7d\/b4\/74b6da3c544068b7ed1679765052-200x200-1\/75kva_oil_immersed_three_phase_style_pad_distribution_transformer_35kv_onan.jpg","attrs":{"Brand Name":"HENTG Power","Certification":"UL\/CSA\/IEEE","Place of Origin":"China","Minimum Order Quantity":"1"}}
{"title":"75Kva Three Phase Pad Mounted Transformer with 50\/60Hz Frequency and 35KV Rated","imgUrl":"https:\/\/img.chinax.com\/nimg\/59\/2e\/0df25233403fc37b16a5d13d860d-200x200-1\/75kva_three_phase_pad_mounted_transformer_with_50_2f60hz_frequency_and_35kv_rated_voltage_for_reliable_power_distribution.jpg","attrs":{"Brand Name":"HENTG Power","Certification":"UL\/CSA\/IEEE","Place of Origin":"China","Minimum Order Quantity":"1"}}
{"title":"HENTG POWER 1500kVA 34.5kV\/0.480kV 3 Phase Pad Mounted Transformer \u2013 Oil","imgUrl":"https:\/\/img.chinax.com\/nimg\/71\/97\/ff9d8d250b8f2a9038087bd71847-200x200-1\/hentg_power_1500kva_34_5kv_2f0_480kv_3_phase_pad_mounted_transformer_e2_80_93_oil_immersed_loop_feed_utility_distribution_transfor.jpg","attrs":{"Brand Name":"HENTG POWER","Model Number":"1500kVA 34.5kV\/0.480kV","Certification":"UL, ISO9001, CE, IEC, Type Test","Place of Origin":"China"}}
{"title":"HENTG POWER 3000kVA 34.5kV to 480V Liquid-Filled Pad Mounted Transformer for","imgUrl":"https:\/\/img.chinax.com\/nimg\/0b\/4b\/b298284a6198271da677524bbcda-200x200-1\/hentg_power_3000kva_34_5kv_to_480v_liquid_filled_pad_mounted_transformer_for_industrial_power_distribution.jpg","attrs":{"Brand Name":"HENTG POWER","Model Number":"3000kVA 34.5kV to 480V","Certification":"UL, ISO9001","Place of Origin":"China"}}
The 225 kVA Three Phase Pad Mounted Transformer is a compact, fully enclosed oil-filled distribution transformer designed for underground power distribution systems. Built with dead-front safety design, it ensures maximum protection for operators and the public.
This model supports both loop feed and radial feed configurations, making it highly flexible for different grid structures. With copper windings and high-quality insulation oil, it delivers superior efficiency, durability, and long service life.
Ideal for utilities, industrial plants, and renewable energy applications requiring reliable medium-voltage distribution.
Key Features
Dead-Front Safety Design
No exposed live parts
Fully enclosed and tamper-resistant
Lockable HV & LV compartments
Safe for public and urban installations
Flexible Feed Configuration
Loop Feed: Ensures continuous power supply
Radial Feed: Simple and cost-effective solution
Suitable for different grid topologies
Bay-O-Net Fuse Protection
Internal primary protection system
Easy replacement without removing oil
Combined with backup current-limiting fuse
Enhanced system safety and reliability
High-Efficiency Copper Windings
100% copper conductors
Lower losses and better thermal performance
Higher efficiency and longer lifespan
Oil-Filled Cooling System
Natural oil cooling (ONAN)
Excellent heat dissipation
Stable operation under heavy load
Technical Specifications
Parameter
Specification
Rated Power
225 kVA
Phase
Three Phase
Primary Voltage
11 kV / 13.8 kV / 15 kV (customizable)
Secondary Voltage
400V / 415V / 480V (customizable)
Frequency
50 / 60 Hz
Cooling Method
ONAN (Oil Natural Air Natural)
Insulation Medium
Mineral Oil
Winding Material
Copper
Vector Group
Dyn11 (or as required)
Impedance
4% – 6%
Standard
ANSI / IEEE
Detailed Applications
Urban & Residential Power Distribution
Underground distribution networks
Residential communities
Commercial complexes
Safe installation with no exposed components
Industrial Facilities
Factories and manufacturing plants
Mining and processing industries
Stable power supply for continuous operation
Renewable Energy Projects
Solar PV plants
Battery energy storage systems (BESS)
Used for step-up or step-down voltage conversion
Commercial Infrastructure
Hospitals
Data centers
Shopping malls
Reliable and safe power distribution in populated areas
Harsh Environment Projects
Africa / coastal regions
High temperature and high humidity areas
Anti-corrosion and sealed design ensures durability
Structure & Components
Sealed oil tank
Three-phase core and copper windings
High-voltage compartment (dead-front)
Low-voltage compartment
Bay-O-Net fuse + backup fuse
Load break switch (optional)
Oil level indicator & pressure relief valve
Optional Configurations
Stainless steel cabinet (corrosion-resistant)
FR3 biodegradable insulating oil
Load Break Switch (LBS)
Vacuum Fault Interrupter (VFI)
SCADA monitoring system
High altitude / high temperature design
Testing & Quality Control
Each unit undergoes full Factory Acceptance Testing (FAT):